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NOT 497-2002-en

VERIFYING THE LNB AND THE DISH

Description: 

verify that the signal coming from the lnb is correct.

a field strength meter capable to convert and measure sat if signals will be necessary.

in case you do not have any fsm available, we suggest the following:

  • take a satellite receiver/modulator that you know performs correctly ,

e.g. a unit that has already been used and tested in other installations.

  • connect this unit to the lnb.
  • connect a tv set to the output of the unit. 
  • observe the picture quality.
  • if the picture quality was bad, check the following:
    • that the focal distance is ok for this particular dish (measure from the bottom of the dish to the center of the feedhorn).



    • check the f connector of the lnb and test the 18 vdc from the rcvr/mod unit
    • verify that the lnb is working by testing its consumption
    • verify that the adequate polarization of the satellite signal is coming from the lnb (adjust polarity discrimination). -check the alignment of the dish
Id Anrterior: 
41
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